色谱法分析气中硫化氢出现倒峰的处理与研究  

Treatment and study of hydrogen sulfide reversed peak in gas by gas chromatography

作　　者：王彦华 寇园园 WANG Yanhua;KOU Yuanyuan

机构地区：[1]国家能源集团宁夏煤业有限责任公司煤制油化工质检计量中心,宁夏银川750021

出　　处：《化工设计通讯》2024年第2期1-3,共3页Chemical Engineering Design Communications

摘　　要：在气相色谱仪使用的过程中,难免会出现各类故障,针对煤基合成气中常量硫化氢色谱分析出现倒峰的问题,通过实验排除了样品水分、载气的纯度、载气漏气、色谱柱柱头堵塞对硫化氢出峰的影响,最终找到了因热导检测器的运行温度过高损坏了连接检测器部位的色谱柱柱头从而影响硫化氢的正常出峰。只有从根源找到问题产生的原因和解决措施,才能快速处理故障,恢复仪器的正常运行,保证仪器的稳定性、各组分定量准确性,提高分析数据的重复性和准确度。从而降低仪器维护、校准周期,维修成本,确保分析检测工作的正常进行。仅供从事气相色谱仪维护和使用人员参考。Various malfunctions are inevitable during the use of gas chromatography.Focusing on the problem of reversed peaks in the chromatographic analysis of constant hydrogen sulfide in coal-based syngas,this study conducted experiments to eliminate the influence of sample moisture,carrier gas purity,carrier gas leakage,and column head blockage on the hydrogen sulfide peaks.Ultimately,it was found that the operation at a high temperature of the thermal conductivity detector damaged the column head connecting the detector,affecting the normal peak of hydrogen sulfide.To quickly solve faults and recover normal instrument operation,it is necessary tofind the root cause of the problem and take corresponding measures to ensure the stability of the instrument,the accuracy of each component's quantification,and improve the reproducibility and accuracy of analytical data.This helps to reduce instrument maintenance and calibration periods,repair costs,and ensure normal analysis and detection.This paper is only for reference for gas chromatography maintenance and operation personnel.

关 键 词：煤基合成气 硫化氢 气相色谱仪 色谱柱 倒峰 

分 类 号：O659.2[理学—分析化学] TQ116.2[理学—化学]